First of all, I'm beginner in Django-filter if you could offer best solution, I'll be glad to hear it.
I need to filter QuerySet by ForignKeys' fields. And exactly author
and worker
.
class Object(models.Model):
class Meta:
abstract = True
author = models.ForeignKey('Users.User', on_delete=models.CASCADE)
class Task(Object):
priority_choices = (
('high', 'Высокий'),
('middle', 'Стандартный'),
('low', 'Низкий'),
)
status_choices = (
('open', 'Открыта'),
('done', 'Выполнена'),
('close', 'Закрыта'),
)
name = models.CharField(max_length=140)
description = models.TextField()
end_date = models.DateField()
worker = models.ForeignKey('Users.User', on_delete=models.CASCADE, related_name='worker_set')
priority = models.CharField(max_length=15, choices=priority_choices)
status = models.CharField(max_length=15, choices=status_choices)
class TaskFilter(filters.FilterSet):
my_tasks = filters.BooleanFilter(
label="Мои задачи",
method='my_task_filter',
widget=forms.CheckboxInput()
)
tasks_for_me = filters.BooleanFilter(
label="Задачи для меня",
method='tasks_for_me_filter',
widget=forms.CheckboxInput()
)
commented_tasks = filters.BooleanFilter(
label="Я комментировал",
method='commented_tasks_filter',
widget=forms.CheckboxInput())
class Meta:
model = Task
fields = ['my_tasks', 'tasks_for_me', 'commented_tasks']
def my_task_filter(self, queryset, name, value):
print(1, self, queryset, name, value)
return queryset.filter(author_id=self.request.user.id)
def tasks_for_me_filter(self, queryset, name, value):
print(2, self, queryset, name, value)
return queryset.filter(worker_id=self.request.user.id)
def commented_tasks_filter(self, queryset, name, value):
print(3, self, queryset, name, value)
return queryset.filter(comment__author_id=self.request.user.id)
According to prints in filters.py I get:
1 <TaskManager.filters.TaskFilter object at 0x7f87290dea90> <QuerySet [<Task: Task object>, <Task: Task object>, <Task: Task object>]> my_tasks False
2 <TaskManager.filters.TaskFilter object at 0x7f87290dea90> <QuerySet []> tasks_for_me True
3 <TaskManager.filters.TaskFilter object at 0x7f87290dea90> <QuerySet []> commented_tasks False
So I have two questions: First of all, why only first custom filter get queryset? Also, how can I make filter with three radio buttons which will be just return need queryset?
It is clear from the queryset that 3 tasks have author as 1. This also means that you must be querying from user 1. Hence my_task_filter
returns 3 results.
For tasks_for_me_filter
you get 0 results since no worker has id 1.
To fix this, you need to pass the user_id (of the worker you wish to check) to this queryset somehow. Maybe using the request parameter.
Although this is the suggested answer - this doesnt fix the issue. Please look into the comments below for some hints.
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